Charles e



L L E W E J B C SPRING TOOTH HARROW.

Patentedin gfi, 1889.

I INVENTOR:

V WITNESSES:

Elm/4 a awba 5 A'ITORNEY u PETERS, PholwLnhogmphzr. Washington. in;

lUNlTlED starts ATFNT trier.

CHARLES E. JlmvEIiIi, OF AUBURN, NEIV YORK, ASSIGNOR OF ONE-HALF TOALBERT M. NYE, OF SAME PLACE.

S PRI NG=TOOTH MARROW.

SPECIFICATION forming part of Letters Patent No. 396,696, dated January22, 1889.

Application filed March 1, 1888. Serial No. 265,876- (No model.)

T (1 whont it may concern:

Be it known that I, CHARLES E. JEWELL, a citizen of the United States,and a resident of Auburn, in the county of Cayuga and State of New York,have invented certain new and useful Improvements in Spring-ToothIIarrows, of which the following is a specification.

This invention relates to the means em- 1o ployed for connecting thespring-teeth to the frame-bars of s1i)ring-t0oth ha-rrows. Mypurpose isto provide an improved clamp or clip for connecting the upper ends ofthe springs to the harrow-frame.

The characteristic features of my in vention are set forth in my claim;but to enable others familiar with the art more fully to understand thesame, I will now proceed to describe my improvements with greaterparticularity,

making reference in so doing to the accompanying drawings, in which-Figure 1 is a side elevation of my improved clip or clamp, showing itsrelation to the spring and frame. Fig. 2 is a vertical central sec- 2 5tion through the parts represented in Fig. '1. Fig. 3 is a top or planview of the same. Fig. at is a front view thereof. Fig. 5 is a sectionaldetail, showing modifications in the form of the spring. Fig. 6 is abottom view of the 0 clamp or clip, and Fig.7 is a central horizontalsection through the clip.

Like letters of reference indicate like parts.

In the drawings, A and B represent the frame-bars. The bars A A, I make,by preference, of wood, and the bars B B of either steel or iron. Inorder to secure lightness as well as strength in the bars B B, I makethem angular in cross-section or with a longitudinal rib, a, dependingfrom one edge thereof.

In practice a series of bars, A A, arranged parallel to each other,intersect a series of parallel bars, B B, and the frame thus made isusually centrally jointed, so as to be capable of adjusting itself touneven ground but as frames constructed in this manner are well known Ihave not attempted to illustrate the same fully.

C is the clip, and D is a spring-tooth secured to the frame by meansthereof. The clip 0 consists of two parts, Z) and c, which I clamptogether about the upper part of the spring by means of a U-bolt, (Z,and nuts c e. The main or chief part of the clip Z), the forward face ofwhich I call the spring-seat, is arranged vertically and has ahorizontal arm or extension, g, to admit of its being attached to theframe, which attachmentI make by means of a bolt, 71., passing throughthe said extension, and also through the framebars at their point ofintersection, the said bolt being secured by means of a nut, '21. Itwill be perceived that the part Z) of the clip depends between the barsA and B at the angle formed at their intersection, and that the portionj extending between the said bars has beveled or angular sides or facescorresponding to the angle formed by the intersection of the said bars,as is clearly indicated at 7.: 7.1, Fig.

6. By these means the bars A and B are greatly braced or prevented frombeing drawn out of their proper relations to each other. It will also beperceived, especially on reference to Figs. 2 and 5, that the meetingfaces or surfaces of the parts Z) and c of the clip are curvilinear. InFig. 2 I have shown these parts as fully clamped or drawn together bymeans of the U-bolt (Z and its nuts, so as to retain the spring firmlyin place; but by referring to Fig. 5, which shows the part c as notfully drawn to the part Z; or as not tightly clamping the spring inplace, it will be perceived that the curvature of that part of thespring which is between the parts I) and c is in a circle having ashorter radius than the circle in which the inner face of the part 0lies. It will also be perceived that the part I) is so formed that thesaid spring will bear on the outer ends only of the said part, andconsequently that the spring, when fully tightened, will exert ayielding force or pressure against the part c. This pressure is felt bythe bolt (Z, and as a result thereof the nuts 6 c: are prevented frombecoming loose.

I desire to state that in practice I may or may not use a central rest,Z, to limit the in-. 5 ward movement of the spring D, or to furnish itwith a seat or rest approximately between the upper and lower ends ofthe clip. To prevent the spring from moving or slipping laterally I makeprojecting ribs or flanges m m on the part b of the clip, and theseflanges I extend, by preference, far enough to overlap the edges of thepart c, as is clearly indicated in Fig. 7, thus also aiding in retainingthe part c in its proper place. The screw-threaded ends of the bolt orloop 01 pass through ears 1?. n, projecting laterally from the part Z2,and the said bolt will thus, under ordinary circumstances, besufficiently held in place; but to prevent any possibility of itssagging or being bent down in front I make a small depression, o, in thepart c, and the end bar of the bolt lies in this depression. Small ribsor lugs 19 p on the sides of the part a will further aid in retainingthe boltin its horizontal position; but neither the depression 0 nor theribs 1) p are absolutely essential, though preferable, for the purposereferred to.

The downward extension j, by fitting into the angle at the'intersectionof the framebars, not only prevents the said bars from being drawn orshifted from the angle at which they are set with relation to eachother, but also, on that account, enables me to use comparatively lightfastenings for securing the frame-bars to each other at theirintersections.

In the drawings I have shown only one bolt for securing the clip to theframe-bars. This usually will be sufficient, as the clip bears againstthe forward edges or faces of the bars, and the same bolt will serve tofasten the bars together at any one intersection; but more than one boltmay be so employed, if deemed best.

It will be perceived that the spring D is capable of being adjustedvertically or in the direction of its length, so that its working end orpoint may be set to enter the ground to a greater or less extent. I donot, however, here intend to claim, broadly, a spring-tooth made andarranged to perform the function of a shoe or runner; neither do I hereintend to claim, broadly, a tooth clamp or holder having avertically-arranged portion constituting a seat for the upper part ofthe tooth.

It will be observed that the forward end of the clip curves or inclinesdownwardly and rearwardly from its central part, thus tending to causethe implement to ride free from obstructions and to some extentpreventing clogging.

It is to be understood that as many springs and clips are to be employedas may be deemed expedient on any one frame, and, as the frames ofimplements of this class are well known, I have not here shown acomplete frame or described the same particularly.

I have shown in the accompanying drawings various modifications ordifferences in the form or construction of the spring; but I do not hereintend to be restricted to any particular feature relating to the springor tooth,

as the clips or clamps may be employed with springs or teeth varying inconstruction.

In practice I intend to make the part b of the clip in one and the samepiece of cast metal.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

A clip or clamp for fastening the teeth to the intersecting frame-barsof spring-tooth harrows, said clamp consisting of the seat portion I),having thereon a depending part, j, formed and arranged to enter theforward angles formed by the intersection of the said bars and to therebear upon the two bars forming said angles, respectively, and alsohaving a horizontal extension or bar plate, 9, all made in one and thesame piece of cast metal, a detachable tooth-compressor, and fasteningsfor holding the said compressor against the teeth and for securing thesaid seat to the frame, substantially as specified.

Signed at Auburn, in the county of Cayuga and State of New York, this20th day of February, A. D. 1888.

CHARLES E. JEIVELL. itnesses:

JNo. G. HOSMER, GERRIT LOUGHBOROUGII.

